* Mean and one standard deviation (1SD) are also shown, with iron expressed as FeO. n = number of analyses. Totals <95% are shown in italics. *3501: Appendix B. Major oxide concentrations (wt %) of individual glass shards from cryptotephras at Nordan’s Pond Bog and proximal reference samples analysed at the Electron Microprobe Laboratory, University of Alberta.

* Mean and one standard deviation (1SD) are shown, with iron expressed as FeO. n = number of analyses. Totals <95% are shown in italics. Microprobe analytical conditions are outlined in the table footnote. *